If haploid chromosome number in a cell is $12$. The monosomic number will be
$24$
$21$
$25$
$23$
The Barr body is observed in
A pedigree chart below shows the inheritance of a particular sex-linked trait ("trait") Key: Unaffected Males Affected Males Unaffected Females Affected Females How is the trait being studied in the pedigree chart above?
The loss of chromosomal segment is due to
Drosophila melanogastor has $8$ chromosomes in somatic cell. How many linkage groups will be there
Mark the correct statement (w.r.t. sickle cell-anaemia)